Glue and process of making same



No Drawing.

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PAUL KREISMANN, OF CHICAGO, ILLINOIS.

GLUE AND PROCESS 'OF MAKING SAME.

Application filed May 24,1919.

To all whom it may concern.

Be it known that I, PAUL KREISMANN, a

nois, Improvements Making Same,

specification.

residing at Chiof Cook and State of Illi- This is a continuation in'part of my application Serial No. 286,134, filed March 29,

There is an urgent and constantly increasing demand for animal glue, owing to rials for making ti'on'ha's for its object to glue of superior making same 1n an inexpensive and for veneer and other work.

venient manner a vegetable substitute for the scarcity of mateanimal glue, and my invenprovide a vegetable and a process for conquality I have found that a vegetable glue of superior quality can be produced at comparatively low cost with potato material, an alkali 'swer the purpose of animal glue for veneer and other work.

starch, a fibrous and water which will an- And I have also found that the fibrous material which is left as a residue when the starch is separated from crushed and finely divided raw potatoes is very satisfactory for the purpose.

In the manufacture of potato starch, as usually practiced at the present time, the

potatoes are crushed or reduced to a finely divided condition and then screened and treated with cold water starch from the to separate the fiber. The starch is then dried in some approved manner and the fibrous pulp residue material. Since is disposed of as waste potatoes consist of approximately 78 parts water, 13 part's'starch is at hand an residue available my lnvent on.

and 9 parts fibrous residue by weight, there ample supply of this fibrous h the mass to to 100 I have referred to a jacketed for use in accordance wit I have discovered that a base for making glue can be satisfactorily produced with a dry mixture of from 60 tato starch and 4:0 to 5 pounds of the fibrous residue, to which a suitable alkali mixture.

The fibrous residue,

to pounds of pois added 3 to 5 pounds of to every pounds of the which is separated from the starch of the potato according to the prevailing practice,

preferably groun fine condition be potato starch.

is dried and d or otherwise reduced to a fore being mixed with the era'bly to 144 F.

-p'erature the process Serial No. 299,573.

Instead of separating the starch and fibrous residue, as above described, potatoes may be crushed on otherwise finely divided, the water removed, and then to the starch and fibrous material remaining a sutlicient quantity of starch may be added to produce a base having the proper proportions of starch and fibrous material herein mentioned. Since there are known to be approximately 13 parts of starch to 9 parts of fibrous residue in raw potatoes grown in the United States, it is a simple matter to add sufficient starch to conform with the proportions heretofore indicated.

In preparing the glue I have found it sat- 'is'factory to proceed as follows I preferably use a kettle having a steam jacketand an agitator and operate the agitator throughout the process. I use from 250 to 600 pounds of cold water to 100 pounds of the base. The cold water is first put in the kettle, the agitator operating, then the base is added and steam is admitted to the jacket to raise the temperature pref- The alkali is dissolved in cold water in the proportion of one part of alkali to about three parts of water, by weight, and this solution is then slowly added to the mixture in the kettle in the proportion of 3 to 5 pounds of alkali to 100 pounds of the base. Meanwhile the temwill rise to F. or thereabouts. My experience has been that the best results are obtained reached 165 F., but it is well known that conversion will take place at a lower temperature as well as at a somewhat higher temperature. The conversion will be indicated when whereupon the steam is turned off and cold water admitted to the jacket to slowly cool F., or thereabouts, ready for use. kettle as a convenient means for practicing but any other means suitable for the purpose may be employed.

If the alkali is first mixed with the base,

in a dry state and as a part thereof, either by the manufacturer or by the consumer, this base is added to the water in the kettle and the temperature is raised sufiicie'ntly to effect the conversion as heretofore described.

The proportions herein mentioned are those which my present investigations and practical work with the improved glue and when the temperature has V the solution will run ofi of a paddle or a stick in a long tenacious thread,

in or about the manner described.

process have proved to produce what I now consider to be the most satisfactory results, but it will be understood by those skilled in the art that the proportions of the materials and the temperatures may be varied as will be found desirable according to the character and quality or the materials used, the grade of glue desired and the conditions of manufacture.

I prefer to prepare a base of potato starch and fibrous material, with or without the alkali, as before described, but if desired these materials may be supplied separately and combined for the first time in the kettle. The starch, fibrous material and alkali may be put in the kettle in any order desired.

As before mentioned, the alkali may be included with the potato starch and the fibrous material as a part of the base prepared as a dry mixture by the manufacturer 7 and shipped complete in large quantities to consumers and by them converted in such quantities as may be required from day to day Thus it is unnecessary for the consumer to rely upon his own employees to produce a proper mixture of the materials, and

he is always assured or" a constant uniformity of mixture which is highly desirable both to the manu facturer and to the consumer. Or, the alkali may be added to the base of potato starch and fibrous material by the consumer, if desired.

, My invention not only greatly reduces the cost of producing a vegetable glue by reason of the use of a comparatively inexpensive potato starch and fibrous material. but the combination of potato starch and fibrous material makes a base for producing a glue of very superior quality suitable for high grade work as well as for ordinary work.

The addition of the fibrous material imparts to the glue an adhesive quality and a body which it would not otherwise possess. And

while the glue is especially suitable for veneer work I have found that it can also be used for some classes of joint and other work where a spreader is employed for applying theglue. By using more water a thinner 'lue can be. reduced which is suit able for other than such as box shocks example.

I claim:

1; A base for making glue consisting of an admixture of terial, there being more starch in proportion to the fibrous material than is present in the raw potato, substantially as described.

2. A base for making a glue consisting of an admixture of potato starch and the veneer and joint work, and paper boxes, for

potato starch and a fibrous ma-v the mixture.

fibrous material of potato, there being more starc-h in proportion to the fibrous material than is present in the raw potato, substantially as described.

3. A base for making glue consisting of an admixture of potato starch and the fibrous material of potato in a finely reduced condition, there being more starch in proportion to the fibrous material than is present in the raw potato, substantially as described.

4. A base for making glue consisting of an admixture of potato starch, potato fibrous material, and an alkali, substantially as clescribed.

5. A glue comprising an admixture of potato starch, a fibrous material and an alkali rendered semi-fluid by conversion, there being more starch in proportion to the fibrous material than is present in the raw potato, substantially as described.

6. z A glue comprising an admixture of potato starch, the fibrous material and an alkali of potato rendered semi-fiuid by conversion, there being more starch in proportion to the fibrous material than ispresent in the raw potato, substantially as described.

7. A glue comprising an admixture of potato starch, the fibrous material and an alkali of potato in a finely reduced condition, said admixture being rendered semi-fluid by conversion, there being more starch in proportion to the fibrous material than is present in the raw potato, substantially as described.

8. The process of making a vegetable glue which consists in preparing a mixture ofpotato starch, potato fibrous material, an alkali and water and subjecting the mixture to heat until the mixture is rendered semifluid by conversion.

9. The process of making a vegetable glue which consists in preparing a mixture of potato starch, the fibrous material of potato finely reduced, an alkali and water and subjecting the mixture to heat until the mixture is rendered semifluid by conversioin 10. The process of making a vegetable glue Which consists in mixing potato starch, the fibrous material of potato finely reduced, an alkali and water in or about the proportions of to 95 pounds of potato starch and 40 to 5 pounds of fibrous material with 3 to 5 pounds of alkali and 250 to 600 pounds of water to every 100 pounds of the mixture of potato starch and fibrous material, agitating and raising the temperature of said mixture to approximately 165 F., and then cooling PAUL KREISMANN. Witness:

M. A. Emma. 

